A 36-year-old G3P2 at 11 weeks’ gestation presents with a new rash. For several weeks she has had increasing anxiety, heat intolerance, palpitations, and unintentional weight loss. At a prenatal visit 2 weeks ago, she had a fine tremor, warm moist skin, and a smoothly enlarged, nontender thyroid. Yesterday she began two medications for this condition. Shortly before bed she developed diffuse itching, and the rash worsened overnight. Temperature is 36.7°C (98.0°F), blood pressure is 109/68 mm Hg, pulse is 113/min, and respirations are 15/min. Examination shows a symmetric, erythematous, blanching, intensely pruritic morbilliform eruption over the trunk and proximal extremities without mucosal involvement. After discontinuing her current medications, the best next step in management during pregnancy is associated with which of the following complications?